In-app vs email
Neither channel wins alone. Email reaches dormant users; in-app hits peak intent. Configure per flow in RedChurn.
Billing recovery
Email on day zero reaches users who have not opened the app. In-app dunning on next open catches daily active users who ignore inbox.
Cancel saves
In-app is primary—intent is highest at the cancel tap. Optional email if they still leave for the store UI.
Win-back
Email re-engages churned cohorts. In-app and push when they return. Stack both and compare save rate per channel in the dashboard.